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Bull Exp Biol Med. 2003 Feb;135(2):120-2.

Effect of oxotremorine on resting membrane potential and cell volume in skeletal muscle fibers in rats after in vivo blockade of NO-synthase.

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1
Kazan State Medical University, Russian Academy of Sciences, Russia.

Abstract

Denervation of rat phrenic muscle or block of NO-synthase in vivo increased the cross-section area of muscle fibers and decreased membrane resting potential. Oxotremorine prevented the development of denervation-induced or denervation-like (i.e. induced by NO-synthase blockade) membrane depolarization and increase of the cross-sectional area of muscle fibers. Pirenzepine abolished the effects of oxotremorine. It was concluded that non-quantal acetylcholine can be involved in the regulation of skeletal muscle fiber volume via activation of M1 muscarinic receptors followed by NO synthesis.

PMID:
12802412
[Indexed for MEDLINE]
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